<style>
    body {font-size:x-large;}
</style>
<p><a href="<?php echo $this->url('hello', array('action'=>'add'));?>">Add new user</a></p>

<table class="table">
    <tr>
        <th>Username</th>
        <th>Password</th>
        <th>&nbsp;</th>
    </tr>
    <?php foreach($all_users as $user) : ?>
        <tr>
            <td><?php echo $this->escapeHtml($user->username);?></td>
            <td><?php echo $this->escapeHtml($user->password);?></td>    <td>
                <a href="<?php echo $this->url('hello',
                    array('action'=>'edit', 'id' => $user->id));?>">Edit</a>
                <a href="<?php echo $this->url('hello',
                    array('action'=>'delete', 'id' => $user->id));?>">Delete</a>
            </td>
        </tr>
    <?php endforeach; ?>
</table>